Lock.



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H. G. VOIGHT.

LOCK.

APPLlcATloN FILED FEB. 6. 1915.

Patented Nov. 23, 1915 oLuMnm PLANouRAPx-x c6 c.

UNITE@ .@illtdl@ ar orripn.

HENRY G. 'VOIGrI-IT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO SARGENT &COMPANY, OF NEW HAVEN, CONNECTICUT, A. CORPORATION 0F CONNECTICUT.

LOCK.

1,161,553. Specification of Letters Patent- Patented Nov. 23, 1915.

Application led February 6, 1915. Serial No. 6,496.

T0 all whom t may concern Be it known that I, HENRY G. VOIGHT, a citizenof the United States, residing in New Britain, county of Hartford, andState of Connecticut, have invented certain new and useful Improvementsin Locks, of which the following is a full, clear, and exactdescription.

rIhis invention relates to locks, and more particularly to the cheaper'class of mortise locks in which a bitted or winged key is adapted tooperate both a latch bolt and a dead bolt from the same keyhole. Theinvention also refers especially to locks of this kind which areprovided with a tumbler common to both bolts, and wherein provision ismade for preventing the actuation of the latch bolt when the dead boltis in its protracted position.

i The primary objects of the invention are to simplify and reduce thecost of locks of this type, and to improve the general construction andoperation of devices of the class to which the invention relates.

To these and other ends, the invention consists in the novel featuresand combinations of parts to be hereinafter described and claimed.

In the accompanying drawing, Figure 1 is an elevation of a lockembodying my improvements, with the cap plate removed, showing the boltsin the normal position; Fig. 2 is a fragmentary view of Fig. 1, showingthe dead bolt protracted; and Fig. 3 is a reverse view of certain partsshown in Fig. l.

Referring to the drawing, the case 5 of the lock, which is shown asbeing of the customary mortise type, is equipped with a latch bolt 6adapted to be retracted by the ordinary inside and outside knobs (notshown) actuating respectively an inside hub 7 and an outside hub'8.rIhese hubs operate upon the latch bolt through a yoke or shoe 9 of anypreferred form. The latch bolt 6 has a shank 10, at the rear extremityof which is a crosshead 11. A dead bolt 12 is located below the latchbolt 6, and is adapted to be operated by a bitted or winged key insertedin a keyhole 13. The bolt 12 is provided with the usual stump or fence14, cooperating with the customary tumbler or tumblers 15, pivoted at16. Beneath the tumbler or tumblers 15 the bolt 12 is provided with theordinary talons 17 adapted to be engaged by the key.

In accordance with my invention, the latch bolt is adapted to beoperated by the key through mechanism which may be constructedsubstantially as follows: Pivoted on a post 18 in the case is a lever 20having an upper extremity 21 located in front of the crosshead 11 of thelatch bolt. Intermediate the pivot 18 and the extremity 21,`the

lever 20 is pivoted by a pin 22 to a slide 23,

guided substantially horizontally on the back of the ease between lugs24e. This slide 23 carries a fencev 25, adapted to cooperate with anextension 26 on the upper part of the tumbler or tumblers 15, and at itslower part the slide 23 carries a rigid depending arm 27, which, in thenormal position of the parts, extends into the path ofthe key bit 28, asshown by the dotted lines in Fig. 1.

The member 23 carrying the operating projection or arm 27 is slidableforwardly and rearwardly with the dead bolt 12, for which purpose thearm 27 is positioned between projections 29, 30 on the rear face of thedead bolt shank, and the pivot 18 for the latch-retracting lever 2O islocated in a cut-away portion or notch 31 of said lever'. When the slide23 is moved into its forward position, the latclrretracting lever ismoved relative to the pivot 18, but the pivot 18 still continues tosupport the lever, as shown in Fig. 2. In this position, the arm 27 isout of the path of the key bit.

The operation of the improved lock will be obvious for the most partfrom the foregoing description. VVhen the parts are in the positionshown in Fig. 1, and it is de sired to retract the latch bolt by meansof the key, the key is inserted into the keyhole and swung into theposition indicated by the dotted lines, so as to contact with the arm orprojection 27, and thereby pull back the slide and retract the latchbolt. In this operation, the retracting leverl swings on the pivot 18.Before said lever can be operated, however, the tumbler must obviouslybe raised to disengage the fence 25 on the slide 23, and therefore a keywhich is not bitted to actuate the tumbler properly will not retract thelatch bolt. The key bit engages the arm 27 and fully' actuates the latchbolt without contacting with. the forward talon of the dead bolt. Whenit is desired to pro- The projection 30 on the dead bolt contacts withthe arm 27o-f slide 23 and carries said slide forwardly, as previouslyexplained,

so as to move the arm 27 out of the path of" .the key. rl`hus if akey'is inserted at this time, it Will/be absolutely inoperative on thelatch bolt. When the dead bolt is retracted, the projection 29 on itsshank engages the arm 27, and carries the slide and the latchretractinglever back to ythe initial position. After the deadr bolt has beenretracted, the continued rotation of the key in the same direction thenretracts Vthe latch bolt. c

The advantage of my improved vconstruction resides primarily in thesmall number of parts required` to effect the functions stated,randconsequently in thejlowY cost at Which theV lock can be produced.

TWithout limiting `myself to the construction shown, I claim; v Y.

l. lna lock, the combinationof a latch bolt, a dead vbolt, retractingmechanism for the latch bolt, including a lever andan operating slidefor said llever,iand means for moving saidflever and slide with .thedead bolt; substantially asdescribed.

. 2. ln a lock,.fthe.combinatioilV of alatch bolt, a retractingjleyertherefor, a slide to -operate saidlever, carrying' a fence,-a dead boltcarr infra fence a tumbler co eratinfr y h a h With both of said fences,and a key to operate said dead bolt and said slide; substantially asdescribed.

8. In a lock, the combination of a latch bolt, a retracting, levertherefor, a slide pivoted to said lever and carrying a fence, a deadbolt carrying a fence, a tumbler having a portion to cooperate with thelirst fence and another portion to cooperate with thc second fence, anda key to operate said slide; substantially as described.

d. ln a lock, the combination of a latch bolt, a retracting levertherefor, a key-operated actuating member for said retracting levercarrying a fence, a dead bolt carrying a fence, and a tumbler pivoted tothe lock case and having portions to coperate with the respectivefences; substantially as dcscribed.

Y 5. In a lock, the combination of a latch bolt, fa dead bolt, a latchretracting lever, a pivotal mounting` for said lever on the case, withrespect to which said lever is bodily movable, a slide fixedly pivotedto said lever,and vmeans for moving said lever and said slide With thedead bolt; substantially as described.

In Witness whereof, l have hereunto set my hand on the 4th day ofFebruary, 1915.

HENRY G. VOGHT. Witnesses:

- R. R. CAMPBELL,

MARGARET QUiNN.

Copies of this patent may be obtained for ive cents each, by addressingthe Commissioner of PatentsA Washington, D. C.

